tools: update js-yaml to 3.13.1 for lint-md.js

Update js-yaml from 3.13.0 to 3.13.1 in the lint-md.js tool. Version
3.13.0 is the subject of a security problem. It is almost certainly not
anything that is reasonable exploitable in our code base (as it's
internal tooling) but good to update anyway just in case...

Refs: https://app.snyk.io/vuln/SNYK-JS-JSYAML-174129

PR-URL: #27195
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Yongsheng Zhang <[email protected]>

Author: Trott